Comparison

World Time Shifter Clock vs Tip Zombie

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

World Time Shifter Clock

This app helps you manage time across different time zones for global coordination. Easily plan meetings, stay connected with loved ones, and track events worldwide. Its intuitive display and time-shifting feature make it simple to understand and use.

Highlights
  • Intuitive world clock display
  • Time shifting for time zone comparison
  • Meeting scheduling across time zones
  • Travel time forecasting
  • Event reminders and notifications
Features
Read full description

Coordinate with anyone, any time, anywhere, around the world with this unique and intuitive world clock. SYNC TEAMS - schedule overlap feature makes it easy to see when everyone's schedule coincides. KEEP IN TOUCH - Stay connected to family around the globe - know when it's the best time to call your relatives in another time zone. GREAT FOR TRAVEL - Plan your travel - use it to forecast your landing time after a long flight thru multiple time zones. GLOBAL SPORTS MATCHES - Don't miss the opening kick-off of the match in Manchester. TRADING MARKETS - Stay on top of the financial markets around the world. Features • Unique Intuitive Display - Super easy to see the times around the world • Time Shifting: Rotate the clock forwards or backwards to see time changes. • Large Widget - see the full clock face right on your home screen. • Schedule Overlap - see hours of overlap for schedules in one or more locations. • Reminders: Creates notifications for any time, any place.

About

Tip Zombie

This app helps you confidently calculate tips worldwide, offering location-aware guidance for over 100 countries. It provides service-specific recommendations and handles various currencies and tipping modes.

Highlights
  • Location-aware tipping guidance for 100+ countries
  • Service-specific tipping recommendations
  • Supports percentage, flat rate, optional, and no-tip modes
  • Handles standard, zero-decimal, and three-decimal currencies
  • Flexible calculation options
  • Built-in Tip Guide with cultural context
  • Private by design, no account or data collection
Features
Read full description

Tipping shouldn’t be a source of stress. Whether you’re at a restaurant in Paris, a hotel in Tokyo, or a taxi in São Paulo, the rules are different everywhere — and getting it wrong can feel awkward at best, offensive at worst. Tip Zombie takes the guesswork out of tipping, no matter where you are in the world. KNOW WHAT’S EXPECTED, EVERYWHERE Tip Zombie covers 100+ countries with location-aware guidance tailored to local customs. It doesn’t just give you a number — it tells you the full picture. Some countries expect a percentage. Others prefer a flat amount. In many places, tipping is entirely optional. And in some, leaving a tip is actually considered rude. Tip Zombie knows the difference, and it tells you clearly. BUILT FOR EVERY SERVICE Tipping at a fine dining restaurant is nothing like tipping a taxi driver or a hotel porter. Tip Zombie gives you service-specific guidance across dozens of categories, including: -Restaurants and cafés -Hotels and porters -Taxis and rideshare -Spas and salons -Tour guides and excursions -And many more FOUR FLEXIBLE TIPPING MODES Every country is assigned the tipping mode that fits its culture: -Percentage — the standard for tip-expected countries -Flat Rate — for places where a fixed amount is the norm -Optional — when a tip is appreciated but never assumed -No Tip — for countries where tipping isn’t customary or is actively discouraged A clear banner tells you exactly what applies before you ever punch in a number. HANDLES EVERY CURRENCY, CORRECTLY Most tip calculators break on edge-case currencies. Tip Zombie doesn’t. It correctly handles: -Standard decimal currencies (USD, EUR, GBP) -Zero-decimal currencies like Japanese Yen and Korean Won -Three-decimal currencies like Kuwaiti Dinar and Bahraini Dinar No rounding errors. No awkward decimals. Just the right number. FLEXIBLE CALCULATIONS -Choose your tip percentage or enter a flat amount -Add tax or calculate on a post-tax total -Tip Zombie walks you through seven common input scenarios so the math always works the way you expect THE TIP GUIDE Not sure what’s appropriate? Open the built-in Tip Guide for a deep dive into tipping culture by region and service type. Real examples, real context — so you can make an informed decision, not just a guess. PRIVATE BY DESIGN Tip Zombie doesn’t require an account. It doesn’t collect your data. It doesn’t track your spending or share anything with anyone. It’s a tool, not a platform — and it works the moment you open it. SIMPLE. CALM. ALWAYS WITH YOU. No subscriptions. No ads. No friction. Just clear, confident tipping guidance wherever life takes you. Download Tip Zombie and tip like you’ve been there before.

Screenshots

World Time Shifter Clock4 screens
Tip Zombie4 screens

Verdict

The call

The clearest difference is rating: Tip Zombie at 5.0 against World Time Shifter Clock's 4.4. Tip Zombie also leads on ads (none vs shown) and monetization model (free vs ad-supported). World Time Shifter Clock's advantage is ratings volume (98 vs 2). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Tip Zombie holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: World Time Shifter Clock has 98 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

World Time Shifter Clock ships an update every 3 weeks, Tip Zombie every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
World Time Shifter Clock versus Tip Zombie: the parameters behind the verdict, then further details
ParameterWorld Time Shifter ClockTip Zombie
PriceFreeFree
Rating4.4 (98 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings98 — better2
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.016.4 — better
Further details — not scored
Size23 MB61 MB
Age rating4+4+
DeveloperDavid RichmondZombie Platforms LLC

Customer experience

World Time Shifter Clock

All ratings98 ratings
Positive87.8%
Neutral3.1%
Negative9.2%
Written reviews17 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Tip Zombie

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

World Time Shifter Clock

No in-app purchases

None

Tip Zombie

No in-app purchases

Questions

Is World Time Shifter Clock free?
World Time Shifter Clock is free to download, with no in-app purchases.
Is Tip Zombie free?
Tip Zombie is free to download, with no in-app purchases.
Which has better reviews, World Time Shifter Clock or Tip Zombie?
Tip Zombie is rated higher. World Time Shifter Clock averages 4.4 out of 5 from 98 ratings, while Tip Zombie averages 5.0 from 2 ratings.
Do World Time Shifter Clock or Tip Zombie have ads?
World Time Shifter Clock shows ads; Tip Zombie does not.
Which is updated more often, World Time Shifter Clock or Tip Zombie?
World Time Shifter Clock ships an update every 3 weeks, and Tip Zombie every 2 weeks. Most recently, World Time Shifter Clock was updated on November 3, 2026 and Tip Zombie on November 5, 2026.

Other comparisons